In the west, the glaciers feeding Wordie Ice Shelf (1.3-cm SLE) lost 1 to 2 Gt/y in 1979–2003, increasing to 8 Gt/y in 2017, with speed-up detected over the entire drainage. The mass loss for Wilkins ...

The PNAS Editorial Board is made up of NAS members who are active scientists and experts in their fields. On submission, your paper is assigned to an Editorial Board member in one of the 31 NAS ...

Human biology is typically studied within the framework of sex (evolved, innate factors) rather than gender (sociocultural factors), despite some attention to nature/nurture interactions. Testosterone ...

Though people regularly recognize many distinct emotions, for the most part, research studies have been limited to six basic categories—happiness, surprise, sadness, anger, fear, and disgust; the ...

A cold system normally takes longer to warm up than a cool system. Yet recent theoretical studies have suggested that the reverse may sometimes be possible. Here, using a colloidal particle in a heat ...

The history of sweet potato in the Pacific has long been an enigma. Archaeological, linguistic, and ethnobotanical data suggest that prehistoric human-mediated dispersal events contributed to the ...

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The rates of biological primary production before the emergence of atmospheric oxygen on Earth are thought to be low. However, mudstones from the Archean Era contain a high organic matter content, ...

Short-lived, high-frequency episodes in the electrical activities of mammalian hippocampus, called ripples, occur during sleep and quiescence, and are linked to memory formation. To which extent they ...

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Some historically persecuted large carnivore species in Europe and North America are now recovering and expanding into formerly occupied ranges. The spatial and temporal dynamics of wildlife ...